Ozark Highlands Trail River Valley Region View Website Calculate Trip Get Directions Overview:stretches 165 miles from Lake Fort Smith State Park to the Buffalo National River; passes through several public campgrounds, one of the longest, most beautiful hiking trails in the country. Local access point is along Scenic Hwy. 23 North (The Pig Trail) Address: Ozark Highlands Trail Ozark, AR 72949 Website: http://ozarkhighlandstrail.com/ Connect: Save to foursquare